#!/usr/bin/env python3
# -*- coding: utf-8 -*-


import requests

urls = ['http://www.zzjc.edu.cn/upload/n_20191216122828.jpg',
'http://www.zzjc.edu.cn/upload/n_20191223085813.jpg']

def download_image(url, k):
    respond = requests.get(url)
    with open('image%d.jpg' % k, 'wb') as fo:
        fo.write(respond.content)


for k, url in enumerate(urls):
    download_image(url, k)

# --- Multi Threads ---

import threading

threads = []
for k, url in enumerate(urls):
    thread = threading.Thread(target=download_image, args=(url, k))
    thread.start()
    threads.append(thread)

for thread in threads:
    thread.join()